Male impotence or erectile dysfunction is the persistent inability to achieve or maintain an erection that allows for a satisfactory sexual intercourse. It must be differentiated from other sexual problems, such as lack of desire, alterations of ejaculation (premature ejaculation, delayed ejaculation and absence of ejaculation) or disorders of orgasm.
Impotence or erectile dysfunction is a frequent illness that; if left untreated; can affect relationships with the couple, family, work environment and social life. All men may have trouble getting an erection in their life, especially if they are tired, have stress, have a serious illness or are under the influence of alcohol or drugs.